My lab is senior 13 years old. Has some trouble at times getting up but generally not often. Boarder collie has a cyst on her side, but it is genetic and non cancerous. Was removed once but grew back. Has a vet appointment in August. Pitbull is 2 and also has appointment in august for spaying. She's over friendly and a good pup. Loves kids and I haven't had any problems with her at all. All 3 are female. Healthy and due for updates in August.